>4nx1_B mol:protein length:326 C4-dicarboxylate transport system substrate-binding proteinMHHHHHHSSGVDLGTENLYFQSMETVLRGASMFDEEHAFTKTLRKFEELVDEKYDGDVTFDLRLNGELGVESDYVTFLNQGVAIDYTILAPSNMAKFAPSIPLMDMPFLFRDLDHWNAVLSSDVLAPLEDELLEKADIKIVGYTGGGTRNLLSKQPVVTFDDLKGHKMRVMGAPIQAQIFQALTAAPSAIAYNEVYNAIQTGVIAGFENEAASIQNLKFYEVAPNLTLTRHSITVRPIVMSGKTFNSLPADLQAVVLEAGEEAGAYGRELESREDGVKLQEMVDAGQLTVSEFENRDKMLEMVKPVQDAYAAEIGASDLLEAVRAK